Gate-valve.



W. H. SCOTT.

GATE VALVE.

APPLICATION FILED FEB.13, 1912.

1,037,338, Patented Sept. 3, 1912.

WILLIAM H. soorr, or KALAMAZOO, MICHIGAN.

GATE- VALVE.

Specification of Letters Patent.

. Patented Sept. 3, 1912.

Application filed February 13, 1912. Serial No. 677,297.

To all whom it may concern:

Be it known that I, WILLIAM H. SCOTT, a

citizen of the United States, residing at the city of Kalamazoo, countyof Kalamazoo, State of Michigan, have invented certain new and usefulImprovements in Gate- Valves, of Which the following is a specification.

This invention relates to improvements in gate valves.

The main objects of this invention are:

First, to provide an improved gate valve which is well adapted forembodiment in large sizes, and for cont-rolling materials such as paperstock or pulp, and which is not likely. to become clogged whilecontrolling such material. Second, to provide an improved gate valvewhich may be easily installed in systems of piping already in place.Third, to provide an improved gate valve which is simple and .economical1n structure and one which is durable and not likely to get out ofrepair.

Further objects, and objects relating to structural details willdefinitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the.

following specification.

The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodi ment. of my invention is clearlyillustrated in the accompanying drawing, forming a part of thisspecification, in which:

Figure I is a side elevation of my im-' proved valve, a portion of thelever being broken away. Fig. II is an edge view thereof, the valvebeing shown in connection with a conduit or pipe. cal section taken on aline corresponding to the broken line 3--3 of Fig. I. Fig. IV is ahorizontal sect-ion taken on a line corresponding to line 44 of Fig. I.Fig. V is a detail section taken on a line corresponding to line 55 ofFig. I, showing the means of attachment for the coupling members 6 tothe valve casing. Fig; VI is a perspective view of one of the pipecoupling members.

In the drawing, similar reference charae- Fig. III is a detail vertiinular flanges 3. These flanges are provided with radial slots 4 adaptedto receive the heads of the bolts 5 for attaching the pipe couplings 6.The pip couplings 6 are threaded to engage t e pipe 7, and are clampedto the flanges 3 by the bolts 5. The pipe couplmgs 6 are provided withslotted ears 8, adapted to receive these bolts when the bolts arepresented sidewise thereto.

The valve casing members lare provided with flanges 9 on their innerfaces,'each plate having one flange, the flanges of the two plates beingdisposed diagonally opposite so that the plates are spaced to provide aslide-way for the plate-like valve 10. The

' valve 10 is provided with a port 11, adapted to be brought intoregister with the ports 2 of the valvecasing. -By thus-forming thecasing members 3, they may be made duplicates and are brought face toface, as clearly shown. The coupling members 6 are also duplicates.

The casing members 1 are secured together by clamping bolts 12. Eachcasing meniber is provided with a pair of upwardlypro ecting arms 13, onwhich the lever 14 is mounted by the pivot 15. The lever is adapted tobe mounted on either side vof the valve casing. This permits its beingarranged to be operated from the right or the left hand side, asdesired. The inner end of the lever 14 is connected to the valve by thelink 16.

serted in a system already in place. as the coupling 6 can be screwedupon the pipe and then attached to the valve casing, the valve casingbeing slipped between the couplings. The valve casing is preferably openat the bottom, so that it is self clearing.

While my improved valve is mainly designed by me for the control ofpaper stock conduits and large conduits, it is desirable for use invarious relations where gate valves are adapted or desired.

I have illustrated and described my improved gate valve in detail in theformin which L. have embodied it for use. 'I am aware, however, that itis capable of con siderable structural variations in detailsleverconnections. As such modifications will no doubt be readily understoodby'those skilled in the art to which this invention relates, I have notattempted to illustrate or describe the same herein.

Having thus described my invention, what opposite and parallel toprovide a slide-Way open at the top and bottom, said casing membersbeing provided with pairs of pro-" jecting lever supporting arms at oneend; clamping bolts for said casing members; a plate-like valve arrangedin said slide-way and having a port therein adapted to be brought intoand out of register with said port openings of said casing members; alever pivotally mounted on one pair of arms on said casing members; alink connecting said lever to said valve; pipe coupling members havingslots therein; and attaching bolts for said coupling members adapted tobe engaged in said bolt slots of said casing member attaching flanges.

2. In a gate valve, the combination of the casing comprising a pair ofplatelike casing members having port openings therein and attachingflanges surrounding said port openings, said attaching flanges beingslot-ted to receive bolt heads presented sidewise thereto, each of saidcasing members being provided with a flange on its inner face, saidflanges being disposed diagonally opposite and parallel to provide aslide-way open at the top and bottom; clamping bolts slotted to receivebolt heads presented sidefor said casing members; a plate-like valve'arranged in said slide-way and-havinga port therein adapted to bebrought into and out of register with said port openings of said casingmembers; pipe coupling members having slot-s therein; and attachingbolts for said coupling members adapted to be engaged in said bolt slotsof said casing member attaching flanges.

3. In a gate valve, the combination of the casing comprising a pair ofplate-like easing members having port openings therein and attachingflanges surrounding said port openings, said attaching flanges beingwise thereto, said casing members being provided with pairs ofprojecting lever supporting arms at one end; clamping bolts for saidcasing members; a plate-like valve; a lever pivotally mounted on onepair of arms on said casing members; a link connecting said lever tosaid valve; pipe coupling members having slots therein; and attachingbolts for said coupling members adapted to be'engaged in said bolt slotsof said casing member attaching flanges.

4; In a gate valve, the combination of the casing comprising a pair ofplatelike casing members having port openings therein and attachingflanges surrounding said port openings, said; attaching flanges beingslotted to receive bolt heads presented sidewise thereto; clamping boltsfor said casing members; a plate-like valve; pipe coupling membershaving slots therein; and attaching bolts for said coupling membersadapted to be engaged in saidbolt slots of said casing member attachingflanges.

5. In a gate valve, the combination of the casing comprising a pair ofplate-like casing members having port openings therein, each of saidcasing members being provided with a flange on its inner face, saidflanges being disposed diagonally opposite and parallel to provide aslide-Way open at the top and bottom, said casing members being providedwith pairs of projecting lever supporting arms .at one end; clampingbolts for said casing members; a plate-like valve arranged in saidslide-way and having a port therein adapted to be brought into and outof register with said-port openings of said caslng members; a leverpivotally mounted on one pair of arms on said casing members; and a linkconnecting said lever to said valve.

6. In agate valve, the combination of the casing comprising a pair ofsubstantially duplicate plate-like casing members having port openlngstherein, each of said casing members being provided with a flange on itsinner face, said flanges being disposed diagonally opposite and parallelto provide a slide-Way when the pair of plates are brought face to face;clamping bolts for said casing members; a plate-like valve arranged insaid slide-way; and means for operating said valve.

In witness whereof I have hereunto set my hand and seal in the presenceof two witnesses.

WILLIAM H. SCOTT. [L. s]

Witnesses:

LU'ELLA GREENFIELD, llhnomm'r GLASGOW.

